If you are using WindowsXP, it will not appear because WinXP does not support the encryption requiired. Sorry.

• Go to the Toolbox and enable “Zoom to Cursor” on the Display→General tab

See this CF Thread

1. Solution 1: No need to edit registry. Works for all versions of Windows.
2. Open device manager. (usually through control panel.)
3. Expand “Ports (COM and LPT)”
4. Right click on the port that is messing up the mouse and click properties.
5. Click Port settings→Advanced and turn Serial Enumerator off.
6. It should be ok to turn Serial Enumerator off on everything except the actual mouse.
7. If the mouse not working, how can it be possible to do the above? Good question: Do this when the effect is intermittant.

Solution 2: Disable Serial Mouse Detection

The scale jumps appear very large. I have looked but cannot find a pref or other setting. It may be due to the scales of raster charts.

• Is it a driver problem? Does this happen in other programs.
• Is the battery low?
• Options > Display, check “Smooth Pan/Zooming”. It helps make zooming and panning much more controllable.
• Options > Display, check “Preserve scale when switching charts”.

Behavior: Expected -chart zooms in / out ONE level Actual -chart zooms in / out a crazy amount; mouse zooms 10 levels in / out Turn on Options > Display > General > Smooth Panning/Zooming

• Do you have the GPS connected and working?
• Does the GPS indicator in the upper right show good green signals and operational GPS?
• In the NMEA debug window (Options|Communication), do you observe a continuous data stream or does it stall?
• Do you have regular repeating GLL or GGA messages?
• Is Auto Follow enabled? In the upper left corner, navigate drop down, auto follow is checked.
• Version 5 has a new feature panning the chart, the relative position of the boat “sticks”. The boat snaps back to center when you turn auto-center OFF, which at first is confusing.
• If you pan the boat off-screen, auto-follow is automatically switched off.

In Tools→User interface you can select to collapse the bar after a given time and further down adjust the size with the slider “User Interface scale factor”. Color and location are though not adjustable. Dark grey on black is OK at night but in bright sun the icons are just not visible. For the same reason, you can change the status bar default black text on grey to white. === Why doesn't the plugin work? === - See Plugin API Versions - It is best to keep OpenCPN and plugins updated to the most current version. - If you are having trouble, it is likely you will be asked to update plugins and Opencpn to be current.

Apparently sometimes Toobar works and sometimes not. When the toolbar is not visible, the problem is that ocpnToolbarDialog was created with very small dimensions. See Github Issue #820 for how to edit the config file.

• Windows 10-11 or other OS: Set font size to 250%
• Check Enable scaled graphics Interface
• General Options User Interface scale factor -3
• General Options Chart Object scale factor +1
• Ship Scale Factor -1 about
• See CF Post #3223

How do I adjust scale factor for Ship and AIS, Chart Objects and the User Interface? Adjust the Three Scale Factors Adjust how large the User Interface is. Adjust how large Ships and AIS symbols are. Adjust how large Chart Objects and vector depth sounding are.

Solution: Set the AIS targets to be shown scaled, in Settings > User Interface and near the bottom are sliders for scaling items. Use ship scale at 2 or 3 gets a nice sized AIS target. The Scale sliders were added for greater user control in the new version.

Tried the following:

1. Check setting Tools→Display→Advanced→Physical screen width. If not already Auto select that and Apply. Now read the mm value and compare to your screen width. If it does not conform, change to “manual” and enter your actual size.
2. Changing options such as “Ship icon type” and can get the ship icon back to readable size by changing the option from default to Real Scale Bitmap and setting the mm size to 30 but this does not change the AIS target size.
3. Checked setting for “Physical screen width”. Tools→Display→Advanced→Physical screen width. If not already “Auto” select that and “Apply”. Now read the mm value and compare to your screen width. If it not conform change to “manual” and enter your actual size.
4. Show AIS targets as real size does not help.
5. Note: The external monitor can be forced to display the correct sized icons by first enabling both the laptop display and the external monitor and then disabling the laptop display.
6. Also check Settings→Display→Advanced→Physical screen width. Does it match your actual device screen width in mm? When set to “Auto” the default Icon sizes should be reasonable when the Scale sliders are set to around 5 (midrange). See Settings > User Interface and the three Scale Sliders at the bottom here Adjust the Three Scale Factors

Out of the box, the “Depth” notation is unreadable.

• Try Options > User Interface > Chart Object Scale Slider set on +4 or +5.
• Try using the Swedish color palette which changes depth font to black.
• The Chart Object Scale Slider is for Vector Charts only.
• Raster Chart cartography is superior and depths are very clear in comparision.

* See Options > User Interface Fonts and Font Color.

* Toolbox → User Interface → Fonts dropdown - Console Legend/Console Value, select whatever fonts and colors you want.

* Close Opencpn. * In the Opencpn.ini or opencpn.conf file find DefaultFontSize=0 under the [Settings] section, just below ShowMenuBar=0 * Change the defaultfontsize setting to the font size you would like use and save the file. * Load Opencpn and check your font sizes.

* The AIS Target List does not exist in UI > Options Fonts selection. AIS target list uses the “Dialog” font key in Options > User Interface, Fonts and Font Color..

'Enable Touchscreen interface' in Options/User Interface disables the rollover feature on my PC with a touchscreen. With this setting enabled, touching a target displays the target information. Without it enabled the rollover feature works.

“Rollover” is a mouse thing. One does not exactly “rollover” with a touchscreen. This could get very distracting to the overall UI. Thus, rollover is disabled for touch.

See FAQ above, OpenCPN supports some Touchscreen, however there is an totally independent development and special BETA version available that needs testing. See Cruiser Forum Thread Open CPN on a Touchscreen?

A user can install his or her own icons to use with marks and “own ship”. See Install your own Icons “To replace the default own ship icon, red ship icon just put a file “ownship.xpm” or “ownship.png” in the UserIcons directory.”

Add a Boat Position waypoint

[Settings]
SpaceDropMark=1

to the opencpn.ini file you get at the boat position every time you press the space-bar.

See Moving Options Menu, shifts to and changes Opencpn Window-Min- Max in Ubuntu 18.04 #1787 A Desktop Manager workaround is required. Not possible to change behavior in OCPN.

For Ubuntu 18.04, Gnome desktop: One should install the package “Gnome Tweaks”, and change the setting “Windows→AttachModalDialogs” to OFF.